Buddy Bradley
Pantheistic solipsist
I can see that being really hard to get right. You don't want anyone with a couple of crappy swords to be able to block another player with a wide range of goods from getting a slot in the marketplace - that's what was good about auction houses, it was a level playing field, but allowed those who knew how to play the market to operate effectively in and around the tiny players.I like the idea of some kind of market or bazaar - in the main cities of each area or perhaps in a specific area anyone can access. Someone suggested tying it to player housing - if there are special areas for housing then there can be rough collections of people on the village green, for example, selling their stuff. Perhaps you have to rent a market stall, or at least book a slot - to avoid it being a complete free for all.
I think maybe having some way to advertise things in game would work - maybe some kind of notice board arrangement, where you can list your items and your location/opening times.
Re. housing - have you seen that mentioned as a possibility in ESO? The only other MMO I've played that had housing was Lord of the Rings Online, and that was only guild houses, and they were a bit pointless.